Prediction of diameter errors compensation in bars turning

来源期刊：中南大学学报(英文版)2005年第z2期

论文作者：范胜波 王太勇 汪文津 冷永刚

文章页码：264 - 268

Key words：diameter error； prediction； off-line compensation； turning

Abstract: On the basis of analyzing the machine-workpiece-tool system, the main factors affecting diameter errors in bars turning are considered, and the mathematic models of the actual workpiece diameter at the cutting point are established according to the three usual methods of mounting workpieces on a turning machine. Further a prediction system for diameter errors is developed; a new method, called discrete nodes output, is presented and applied to expressing workpiece diameter errors at given points along the part axis, then off-line compensation is implemented according to the prediction values to diminish machining errors. The results indicate that the method can diminish diameter errors more than 70%, greatly improve the machining accuracy of bars.